package com.ctrip.framework.apollo.openapi.v1.controller;


import com.ctrip.framework.apollo.common.dto.NamespaceDTO;
import com.ctrip.framework.apollo.common.dto.NamespaceLockDTO;
import com.ctrip.framework.apollo.common.entity.AppNamespace;
import com.ctrip.framework.apollo.common.exception.BadRequestException;
import com.ctrip.framework.apollo.common.utils.InputValidator;
import com.ctrip.framework.apollo.common.utils.RequestPrecondition;
import com.ctrip.framework.apollo.core.enums.ConfigFileFormat;
import com.ctrip.framework.apollo.core.enums.Env;
import com.ctrip.framework.apollo.openapi.dto.OpenAppNamespaceDTO;
import com.ctrip.framework.apollo.openapi.dto.OpenNamespaceDTO;
import com.ctrip.framework.apollo.openapi.dto.OpenNamespaceLockDTO;
import com.ctrip.framework.apollo.openapi.util.OpenApiBeanUtils;
import com.ctrip.framework.apollo.portal.entity.bo.NamespaceBO;
import com.ctrip.framework.apollo.portal.listener.AppNamespaceCreationEvent;
import com.ctrip.framework.apollo.portal.service.AppNamespaceService;
import com.ctrip.framework.apollo.portal.service.NamespaceLockService;
import com.ctrip.framework.apollo.portal.service.NamespaceService;
import com.ctrip.framework.apollo.portal.spi.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.util.List;
import java.util.Objects;

@RestController("openapiNamespaceController")
public class NamespaceController {

    @Autowired
    private NamespaceLockService namespaceLockService;
    @Autowired
    private NamespaceService namespaceService;
    @Autowired
    private AppNamespaceService appNamespaceService;
    @Autowired
    private ApplicationEventPublisher publisher;
    @Autowired
    private UserService userService;

    // 创建 Namespace
    @PreAuthorize(value = "@consumerPermissionValidator.hasCreateNamespacePermission(#request, #appId)")
    @RequestMapping(value = "/openapi/v1/apps/{appId}/appnamespaces", method = RequestMethod.POST)
    public OpenAppNamespaceDTO createNamespace(@PathVariable String appId, @RequestBody OpenAppNamespaceDTO appNamespaceDTO,
                                               HttpServletRequest request) {

        if (!Objects.equals(appId, appNamespaceDTO.getAppId())) {
            throw new BadRequestException(String.format("AppId not equal. AppId in path = %s, AppId in payload = %s", appId,
                    appNamespaceDTO.getAppId()));
        }
        RequestPrecondition.checkArgumentsNotEmpty(appNamespaceDTO.getAppId(), appNamespaceDTO.getName(),
                appNamespaceDTO.getFormat(), appNamespaceDTO.getDataChangeCreatedBy());

        if (!InputValidator.isValidAppNamespace(appNamespaceDTO.getName())) {
            throw new BadRequestException(String.format("Namespace格式错误: %s",
                    InputValidator.INVALID_CLUSTER_NAMESPACE_MESSAGE + " & "
                            + InputValidator.INVALID_NAMESPACE_NAMESPACE_MESSAGE));
        }

        if (!ConfigFileFormat.isValidFormat(appNamespaceDTO.getFormat())) {
            throw new BadRequestException(String.format("Invalid namespace format. format = %s", appNamespaceDTO.getFormat()));
        }

        String operator = appNamespaceDTO.getDataChangeCreatedBy();
        if (userService.findByUserId(operator) == null) {
            throw new BadRequestException(String.format("Illegal user. user = %s", operator));
        }

        AppNamespace appNamespace = OpenApiBeanUtils.transformToAppNamespace(appNamespaceDTO);
        AppNamespace createdAppNamespace = appNamespaceService.createAppNamespaceInLocal(appNamespace);

        publisher.publishEvent(new AppNamespaceCreationEvent(createdAppNamespace));

        return OpenApiBeanUtils.transformToOpenAppNamespaceDTO(createdAppNamespace);
    }

    @RequestMapping(value = "/openapi/v1/envs/{env}/apps/{appId}/clusters/{clusterName}/namespaces", method = RequestMethod.GET)
    public List<OpenNamespaceDTO> findNamespaces(@PathVariable String appId, @PathVariable String env,
                                                 @PathVariable String clusterName) {

        return OpenApiBeanUtils
                .batchTransformFromNamespaceBOs(namespaceService.findNamespaceBOs(appId, Env
                        .fromString(env), clusterName));
    }

    @RequestMapping(value = "/openapi/v1/envs/{env}/apps/{appId}/clusters/{clusterName}/namespaces/{namespaceName:.+}", method = RequestMethod.GET)
    public OpenNamespaceDTO loadNamespace(@PathVariable String appId, @PathVariable String env,
                                          @PathVariable String clusterName, @PathVariable String
                                                  namespaceName) {
        NamespaceBO namespaceBO = namespaceService.loadNamespaceBO(appId, Env.fromString
                (env), clusterName, namespaceName);
        if (namespaceBO == null) {
            return null;
        }
        return OpenApiBeanUtils.transformFromNamespaceBO(namespaceBO);
    }

    @RequestMapping(value = "/openapi/v1/envs/{env}/apps/{appId}/clusters/{clusterName}/namespaces/{namespaceName}/lock", method = RequestMethod.GET)
    public OpenNamespaceLockDTO getNamespaceLock(@PathVariable String appId, @PathVariable String env,
                                                 @PathVariable String clusterName, @PathVariable
                                                         String namespaceName) {

        NamespaceDTO namespace = namespaceService.loadNamespaceBaseInfo(appId, Env
                .fromString(env), clusterName, namespaceName);
        NamespaceLockDTO lockDTO = namespaceLockService.getNamespaceLock(appId, Env
                .fromString(env), clusterName, namespaceName);
        return OpenApiBeanUtils.transformFromNamespaceLockDTO(namespace.getNamespaceName(), lockDTO);
    }

}
